RE: Rare Earth Magnets

Posted by unclestu (D) on April 9, 2012 at 15:49:32

In Reply to: Rare Earth Magnets posted by pictureguy on April 5, 2012 at 15:55:41:

In addition, India, Australia, Sri Lanka, and Brazil are also major producers of neodymium. Neodymium is the 26th most abundant element on earth, about the same as Copper. Cost is incurred primarily because refining costs are high: as you noted, the rare earths all mimic each other with the two outer shell electrons.

The other rare elements are critical in the products of flat screen video sets, and thus critical for ipads, Kindles, phones and such: That's how China was able to hold Japan hostage in their recent trade bargaining talks. Neodymium was in great part responsible for the leap in computer memory and motor speed.

Neodymium is already being used for speakers. One of the earliest was Lowther and their DX series of speakers, although sensitivity is not that much increased over their more conventional offerings. There are quite a few tweeters which also use the neodymium type magnets.

There's an excellent book entitled "Nature's Building Blocks" by John Emsley which goes through all the elements one by one and explains them.

Stu

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Follow Ups Full Thread

Topic - Rare Earth Magnets - pictureguy 15:55:41 04/05/12 (15)

RE: Rare Earth Magnets - unclestu 15:49:32 04/09/12 (10)

RE: Rare Earth Magnets - pictureguy 16:38:18 04/09/12 (9)

RE: Rare Earth Magnets - unclestu 17:57:59 04/09/12 (8)

RE: Rare Earth Magnets - josh358 15:31:21 09/15/12 (0)

RE: Rare Earth Magnets - pictureguy 21:11:03 04/09/12 (6)

RE: Rare Earth Magnets - unclestu 13:51:03 04/10/12 (5)

RE: Rare Earth Magnets - pictureguy 18:54:17 04/10/12 (4)

RE: Rare Earth Magnets - adam@denderapartners.com 08:04:01 04/12/12 (3)

RE: Rare Earth Magnets - pictureguy 08:13:47 04/12/12 (2)

RE: Rare Earth Magnets - josh358 15:33:02 09/15/12 (0)

RE: Rare Earth Magnets - adam@denderapartners.com 10:27:05 04/12/12 (0)

RE: Rare Earth Magnets - pictureguy 10:52:50 04/06/12 (1)

RE: Rare Earth Magnets - josh358 15:34:49 09/15/12 (0)

RE: Rare Earth Magnets - 6bq5 09:47:52 04/06/12 (0)

RE: Rare Earth Magnets - adam@denderapartners.com 08:58:20 04/06/12 (0)

Follow Ups

RE: Rare Earth Magnets - unclestu 15:49:32 04/09/12 (10)

RE: Rare Earth Magnets - pictureguy 16:38:18 04/09/12 (9)

RE: Rare Earth Magnets - unclestu 17:57:59 04/09/12 (8)

RE: Rare Earth Magnets - josh358 15:31:21 09/15/12 (0)

RE: Rare Earth Magnets - pictureguy 21:11:03 04/09/12 (6)

RE: Rare Earth Magnets - unclestu 13:51:03 04/10/12 (5)

RE: Rare Earth Magnets - pictureguy 18:54:17 04/10/12 (4)

RE: Rare Earth Magnets - adam@denderapartners.com 08:04:01 04/12/12 (3)

RE: Rare Earth Magnets - pictureguy 08:13:47 04/12/12 (2)

RE: Rare Earth Magnets - josh358 15:33:02 09/15/12 (0)

RE: Rare Earth Magnets - adam@denderapartners.com 10:27:05 04/12/12 (0)

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